SUNLU S1 Plus Filament Dryer
4.7Editor score
Affordable price point for entry users
Quiet operation under ten decibels
Accommodates various filament diameters
In this guide
Moisture is the enemy of high-quality 3D printing, causing stringing, bubbling, and poor layer adhesion. A reliable 3D Printer Filament Dryer Box actively removes humidity from your spools before and during prints, ensuring consistent material performance and reducing wasted filament on failed jobs.
We evaluated ten leading filament dryers based on heating efficiency, capacity, sealing quality, user interface, and compatibility with various materials like PLA, PETG, ABS, and Nylon. Our analysis focuses on real-world performance metrics such as temperature stability, drying time, and ease of use for both hobbyists and professionals.
Each pick highlights specific strengths like dual heating chambers, smart humidity control, or large storage volumes to suit different printing needs. While we aim to provide accurate information, product specifications and availability can change, so always verify current details and pricing before making your final purchase decision today.
Top 3 Picks for Best 3D Printer Filament Dryer Box
SUNLU S4 3D Printer Filament Dryer Boxer
4.7Editor score
Handles four 1kg spools simultaneously
350W PTC heater for fast drying
Triple fans ensure uniform temperature distribution
Creality Filament Dryer Box 4 Spools
4.6Editor score
Dual independent heating chambers for speed
Reaches high temperatures for engineering plastics
Sealed storage maintains humidity during printing
Top 10 Best 3D Printer Filament Dryer Box in 2026 Compared
This side-by-side comparison examines ten top-rated filament dryer boxes to help you find the perfect fit for your workspace and printing requirements. We look at key specifications like capacity, heating power, temperature ranges, and unique features to highlight the strengths of each model.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Comgrow 3D Printer Filament Dryer Box
Stores two 1kg spools
Temperature range 40 to 50 Celsius
LCD screen with touch buttons
Silicone cable sheath outlet
4.4Editor score
Editor's Choice
Creality Filament Dryer Box 4 Spools
Holds four 1kg or two 2kg spools
Dual 200W heating chambers
Maximum temperature 85 Celsius
Illuminated window for monitoring
4.6Editor score
Best Budget
Creality 2026 New Upgrade Filament Dryer Box Pro
Upgraded PTC solution with fan
Heats to 65 Celsius in 15 minutes
Temperature range 45 to 65 Celsius
Knob and display screen control
4.4Editor score
2026 New Creality Space PI Filament Dryer
110W PTC heater with 360 heating
One-key settings for 12 filament types
48 hours timer function
Power-off memory function
4.4Editor score
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
Fan design for fast drying
Temperature range 35 to 55 Celsius
Capacity up to 210mm spools
LCD display shows humidity
4.3Editor score
Polymaker Polydryer Filament Storage Box
Airtight sealed storage design
Built-in hygrometer monitoring
Compatible with desiccant bags
No active heating included
4.4Editor score
SUNLU 3KG Filament Dryer SP2 & Storage Box
Holds up to 3kg spools
250W PTC heating element
Reach 70 Celsius in 15 minutes
Detachable base for storage
4.4Editor score
Sovol Filament Dryer SH02 Dry Box
Dual spool drying capacity
150W PTC heater unit
One-key settings for nine types
Smart safety protection features
4.3Editor score
SUNLU S4 3D Printer Filament Dryer Boxer
Supports four 1kg spools
350W PTC heating power
Smart auto humidity control mode
Triple security protection layers
4.7Editor score
SUNLU S1 Plus Filament Dryer
Operates under ten decibels
Temperature range 35 to 55 Celsius
Manual drying time set up
Two internal rollers
4.7Editor score
1. Comgrow 3D Printer Filament Dryer Box – Reliable Entry Level Drying
Comgrow 3D Printer Filament Dryer Box
Two 1kg spool capacity
Max temp 50 Celsius
LCD touch control screen
Silicone sealed outlet
The Comgrow 3D Printer Filament Dryer Box offers a solid entry point for users looking to combat moisture issues without breaking the bank. With a 4.4 rating, it delivers reliable performance for common materials like PLA and ABS. Its large storage volume fits two standard spools, making it practical for home workshops needing basic drying solutions.
Pros
- Affordable entry level price point
- Clear LCD display easy to read
- Good seal quality with plugs
- Works with 1.75 and 2.85mm
- After-sales technical support team
Cons
- Lower max temperature than competitors
- Single heating element design
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Key strengths include its real-time temperature and humidity monitoring via a 2-inch LCD screen. The adjustable settings allow you to tailor drying conditions between 40 and 50 degrees Celsius. The silicone cable sheath and Teflon tube outlet ensure smooth feeding while maintaining a sealed environment when not actively printing.
One trade-off is the maximum temperature limit of 50 degrees Celsius, which may not suffice for high-temperature materials like ABS or Nylon that benefit from higher heat. Additionally, it uses a single heating element rather than dual chambers, which might extend drying times compared to premium models.
This dryer is best for hobbyists printing mostly with PLA, PETG, or TPU who want an affordable, easy-to-use solution. If you need basic moisture protection for standard filaments, the Comgrow box provides good value and consistent results without complex setup requirements.
Sealed Storage Quality
The snap button upper cover and silicone plugs ensure the box stays sealed when drying is not active, protecting your filament from ambient humidity between sessions.
User Interface Simplicity
Touch buttons on the LCD screen make it straightforward to set temperature and time, reducing the learning curve for new users setting up their first dryer.
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2. Creality Filament Dryer Box 4 Spools – High Capacity Premium Solution
Creality Filament Dryer Box 4 Spools
Four 1kg or two 2kg spools
Dual 200W heating chambers
Max temp 85 Celsius
Illuminated monitoring window
The Creality Space Pi X4 Filament Dryer Box is designed for high-volume users who need to manage multiple spools efficiently. With a 4.6 rating, it stands out for its dual independent heating chambers that dry moisture 30% faster than single-chamber alternatives. This makes it ideal for professional setups or busy makers running long print jobs.
Pros
- Holds large volume of filament
- Fast drying with dual chambers
- High temperature for engineering plastics
- Maintains humidity during printing pauses
- SpacePi X4 optimized design
Cons
- Higher price point
- Larger physical footprint
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Its ability to reach temperatures up to 85 degrees Celsius unlocks drying for advanced materials like ABS, PC, and PAHT. The silicone-sealed enclosure prevents moisture re-absorption 24/7, while the illuminated window allows monitoring without breaking humidity control. This dual functionality as both dryer and storage adds significant value.
While the performance is excellent, the higher price reflects its premium features. The larger size means it requires more desk space compared to compact single-spool dryers. Users with limited workspace might find it cumbersome, though the capacity justifies the space for those printing frequently.
This model is perfect for users investing in high-quality engineering filaments who need fast turnaround times. If you print daily with various materials and need consistent dry storage, the Space Pi X4 provides the speed and capacity to support a demanding workflow.
Dual Chamber Efficiency
Separate heating zones allow for even heat distribution across multiple spools, ensuring no part of the filament gets left damp during the drying cycle.
Material Versatility
The wide temperature range supports everything from PLA to PC, making it a universal solution for mixed-material printing environments.
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3. Creality 2026 New Upgrade Filament Dryer Box Pro – Efficient Mid-Range Pick
Creality 2026 New Upgrade Filament Dryer Box Pro
360 degree air circulation
65 Celsius max temperature
0 to 24 hour timer
Knob and display control
The Creality Space Pi SE offers a compelling balance of performance and cost for those upgrading from passive storage. With a 4.4 rating, it features an upgraded PTC solution that heats up quickly and circulates air evenly inside the chamber. This ensures consistent drying results across your filament spools.
Pros
- Quick heating with fan circulation
- Affordable price for upgrade
- Easy knob operation interface
- Wide compatibility with materials
- Thermal insulation for safety
Cons
- Timer max limit 24 hours
- Basic screen interface
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The temperature range of 45 to 65 degrees Celsius covers most common printing materials effectively. The built-in fan helps reduce drying time significantly compared to static box designs. You can track conditions via a real-time countdown timer and humidity display, allowing precise control over your drying process.
While it lacks the dual-chamber speed of premium models, it delivers excellent value for standard users. The knob control is intuitive, but the interface is less advanced than touchscreen models. The 24-hour timer limit may require manual resetting for very long drying cycles.
This dryer suits users who want reliable active drying without spending too much. If you print mostly with PLA, PETG, or TPU and need a simple, effective solution to improve print quality, the Space Pi SE is a strong recommendation for the price.
Air Circulation System
The internal fan moves hot air through 360 degrees, preventing cold spots and ensuring the entire spool reaches the target temperature.
User Friendly Controls
Physical knobs allow for quick adjustments without navigating menus, making it accessible even for those less tech-savvy.
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4. 2026 New Creality Space PI Filament Dryer – Versatile Material Support
2026 New Creality Space PI Filament Dryer
110W PTC heater
One-key for 12 types
48 hours timer setting
Power-off memory save
The Creality Space PI Filament Dryer emphasizes versatility with presets for 12 different filament types, including composites like PLA-CF and PA-CF. This feature simplifies the process for users working with multiple materials, reducing the guesswork in setting correct temperatures. It ensures optimal drying for both common and advanced filaments.
Pros
- One-key presets for many types
- Long timer flexibility
- Memory function after power loss
- Temperature toggle Celsius Fahrenheit
- Eco-friendly PTC technology
Cons
- Power loss can interrupt drying
- Requires manual reset after outage
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Its 48-hour timer function offers exceptional flexibility for materials requiring extended drying cycles, such as Nylon. The power-off memory function saves your settings even after an outage, ensuring you don't lose your configuration. This continuity is vital for long drying jobs where manual resetting would be inconvenient.
The touch screen allows switching between Celsius and Fahrenheit, catering to regional preferences. However, the 110W heating power might take longer than higher-wattage competitors to reach target temperatures. Users should plan accordingly if quick turnaround is critical to their workflow.
This dryer is ideal for makers who print with a variety of filaments and want convenient preset settings. The ability to customize for high-performance materials makes it a robust choice for those expanding beyond standard PLA and ABS printing needs.
Preset Convenience
One-key settings eliminate the need to manually recall temperatures for different materials, streamlining setup for multi-material users.
Long-Duration Capability
The extended timer supports deep drying for hygroscopic materials like Nylon, which often need 24 hours or more for full moisture removal.
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5. SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus – Quick Drying Focus
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
Fan design for fast drying
Temperature range 35 to 55C
Capacity 210 by 89mm
LCD displays temp time humidity
The SUNLU S1 Plus focuses on accelerating the drying process with an upgraded fan design. By actively circulating air, it helps discharge excess moisture from filaments faster than passive heat-only models. This can reduce waiting times between drying and printing, keeping your workflow efficient.
Pros
- Fan speeds up moisture removal
- Compatible with various brands
- Clear LCD visual display
- Personalized temperature settings
- Supports 3mm filament diameter
Cons
- Moderate max temperature
- Limited to two spool capacity
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Its LCD screen provides accurate readings of temperature, time, and humidity, giving you visibility into the drying environment. The adjustable range covers most common materials, ensuring good print quality with smoother surfaces and better layer adhesion. It supports a wide range of brands and diameters including 3mm.
While the fan helps with speed, the max temperature of 55 degrees may limit use with high-temperature engineering plastics. The capacity is moderate, fitting spools up to 210mm in diameter, which suits standard sizes but may not handle oversized bulk rolls. For general home use, it is effective.
This model is best for users who value quick drying times and clear visibility of drying conditions. If you need a straightforward, effective dryer for daily PLA and PETG printing without complex features, the SUNLU S1 Plus delivers solid performance.
Active Airflow Benefits
The fan ensures that hot air moves across the filament, preventing stagnation and ensuring uniform drying throughout the spool.
Clear Visibility
The large LCD screen ensures you can easily monitor progress without opening the box, which helps maintain stable internal conditions.
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6. Polymaker Polydryer Filament Storage Box – Passive Protection Option
Polymaker Polydryer Filament Storage Box
Airtight sealed enclosure
Built-in hygrometer
Compatible with desiccant bags
Active heating absent
The Polymaker Polydryer offers a different approach as a passive storage solution that prevents moisture re-absorption rather than actively removing it. With a 4.4 rating, it is designed to keep filament in a better printing state between uses through airtight sealing and hygrometer monitoring. It is an excellent companion for already-dry filament.
Pros
- Reliable passive protection
- Built-in hygrometer included
- Easy desiccant integration
- Sealed while printing
- Supports 3mm filament
Cons
- No active drying function
- Requires replacement desiccants
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Its sealed enclosure allows you to print without breaking the seal, maintaining a dry environment during pauses. The visible humidity reading makes it easy to judge when conditions are suitable without guesswork. You can add desiccant bags to further enhance moisture protection for long-term storage.
Since it lacks active heating, it cannot dry wet filament; it only maintains dryness. You must pre-dry your filament separately or use a vacuum before storing it here. However, for maintaining consistency after drying, it performs well. The simple design ensures it fits neatly into any workspace.
This box is ideal for users who already have a drying process but need a secure place to store spools. If you want to minimize waste and keep your filament ready for use without complex electronics, the Polydryer provides reliable passive protection.
Continuous Moisture Control
The seal works even during printing, meaning the filament stays dry while feeding into your printer, reducing the risk of mid-print humidity issues.
Honesty Monitoring
The integrated hygrometer gives you confidence that your storage conditions remain optimal, allowing you to track trends in environmental humidity over time.
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7. SUNLU 3KG Filament Dryer SP2 & Storage Box – Heavy Duty Drying
SUNLU 3KG Filament Dryer SP2 & Storage Box
Holds up to 3kg spools
250W PTC heater
15 minutes to 70 Celsius
HD LCD touch screen
The SUNLU FilaDryer SP2 is built for larger needs with its capacity to hold up to 3kg spools. With a 4.4 rating, it uses a 250W PTC heating element to reach 70 degrees Celsius in just 15 minutes. This rapid heating capability ensures that bulk filament is dried efficiently, reducing downtime.
Pros
- Large spool capacity
- Fast heating speed
- Silent operation
- Detachable storage base
- Includes hygrometer and desiccant
Cons
- Larger footprint
- Higher price range
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Its detachable base transforms the dryer into a standalone storage box, offering all-in-one utility. The sealed design with sliding latches ensures excellent performance to keep moisture out during storage. This dual functionality means you do not need separate boxes for drying and keeping filament dry.
The built-in hygrometer and desiccant containers help maintain internal dryness when not actively heating. The quiet operation makes it suitable for shared workspaces without causing noise disturbance. While it is physically larger, the flexibility it offers justifies the space requirement for serious users.
This dryer suits those working with larger spools or requiring quick turnaround for engineering materials. If you want a system that handles drying and storage seamlessly without moving spools, the SUNLU SP2 provides a practical and efficient solution.
Detachable Design
Lifting the dryer unit off the base allows for immediate use of the box as a sealed container, streamlining your workflow when printing begins.
Silent Operation
The quiet motor ensures the unit does not interfere with work conversations or concentration, making it a good choice for home offices.
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8. Sovol Filament Dryer SH02 Dry Box – Dual Spool Flexibility
Sovol Filament Dryer SH02 Dry Box
Dual spool drying holes
150W PTC heater
One-key for 9 types
Smart safety features
The Sovol SH02 dryer is designed to support two 3D printers simultaneously with its dual spool drying holes. With a 4.3 rating, it saves space on the workbench by allowing you to feed two different extruders from one unit. This is a significant benefit for multi-printer setups needing synchronized filament supply.
Pros
- Feeds two printers at once
- Fast heating speed
- Safety cutoff protection
- Simple one-key presets
- Strong sealing upgrade
Cons
- Limited max temp 70C
- Safety alarm may be noisy
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Its 150W PTC heater heats up efficiently, reaching 70 degrees Celsius within 25 minutes. The safety features, including automatic cuts at 130 degrees, ensure protection against overheating. One-key presets for nine filament types simplify operation, making it user-friendly for various materials.
The improved sealing design keeps moisture out even when power is off, acting as a robust storage box. However, the alarm prompt for fan failures might be distracting in quiet environments. The max temperature of 70 degrees is suitable for most materials but may be lower than some engineering plastics require.
This dryer is excellent for owners of multiple machines who want a centralized drying solution. If you print with a standard range of materials and need to keep two printers running dry without clutter, the SH02 offers practical efficiency.
Dual Feeding Capability
With two outlet holes, you can manage a multi-printer farm from a single box, saving power and space compared to separate units.
Material Presets
The one-key system removes the need to manually calculate temps for different materials, reducing setup errors for new filaments.
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9. SUNLU S4 3D Printer Filament Dryer Boxer – Advanced Humidity Control
SUNLU S4 3D Printer Filament Dryer Boxer
Handles four 1kg spools
350W PTC heating
Auto humidity mode
Triple security layers
The SUNLU S4 stands out as a high-end choice with advanced auto humidity control that adjusts internal levels dynamically. With a 4.7 rating, it can start drying when humidity hits a set range and stop when it drops below 25%, preventing over-drying. This precision ensures filaments stay in optimal condition without manual intervention.
Pros
- Auto start stop based on humidity
- Three fans for uniform temp
- Large capacity multi-color support
- Safety protections included
- High speed for next-gen printers
Cons
- High capacity takes space
- Premium cost point
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Its triple fan system maintains temperature balance within 3 degrees Celsius for uniform drying across all spools. The 350W heater ensures fast heating, ideal for high-speed printing needs. Supporting four 1kg spools simultaneously makes it perfect for multi-color or multi-machine production environments.
Triple security layers including PTC, temperature switch, and software protection offer peace of mind against overheating. While the size is substantial, the capacity justifies it for serious users. The cost is higher than basic models, but the automation features save time and effort.
This dryer is best for professional users or serious hobbyists who print with multiple colors or machines. If you need advanced control and high capacity to ensure consistent print quality across large batches, the SUNLU S4 is a top-tier investment.
Smart Humidity Management
Automated adjustments ensure you do not have to guess when to start drying, maintaining perfect conditions for your filaments automatically.
Multi-Spool Handling
The ability to dry four spools at once supports color swaps and long jobs, removing the need to swap out drying units.
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10. SUNLU S1 Plus Filament Dryer – Quiet and Efficient Budget Pick
SUNLU S1 Plus Filament Dryer
Under ten decibels noise
35 to 55 Celsius temp
1 to 99 hour time setting
Two internal rollers
The SUNLU S1 Plus Filament Dryer offers a quiet and efficient solution for home users. With a 4.7 rating, it operates at under 10 decibels, ensuring it does not disturb your work or home environment. It effectively reduces stringing and clogging caused by wet filament, improving overall model quality.
Pros
- Very quiet operation
- Long time setting range
- Easy roller design
- Affordable price
- Improves print quality
Cons
- Single spool capacity
- Basic LCD screen
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Its user-friendly design includes two rollers inside that allow printing while drying. The customizable time settings range from 1 to 99 hours, giving you flexibility for different drying durations. The simple LCD screen displays temperature and time clearly, making it easy to track progress without confusion.
While it accommodates standard spools, it is a single-spool unit, which might limit throughput compared to larger models. However, its compact size fits well in smaller workspaces. The affordability makes it accessible for beginners looking to solve moisture issues without a big investment.
This dryer is perfect for individual hobbyists who value quiet operation and simple controls. If you print one spool at a time and need a reliable, low-noise dryer to improve surface finish, the SUNLU S1 Plus delivers great value.
Quiet Operation
The near-silent motor allows you to dry filament without noise distraction, making it suitable for living rooms or shared workspaces.
Roller System
Internal rollers ensure smooth feeding during drying, preventing tangles and ensuring consistent filament delivery to your printer.
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Buying Guide – How to Choose the Best 3D Printer Filament Dryer Box
Selecting the right filament dryer involves balancing capacity, speed, and features with your specific printing needs and environment. Understanding key factors ensures you invest in a unit that truly solves moisture issues without unnecessary complexity or cost.
Capacity and Spool Size
Capacity determines how many spools you can dry at once, which impacts your workflow efficiency. Single-spool dryers are compact and affordable but require more frequent swapping for multi-color prints. Multi-spool models like those holding two or four spools save time but take up more desk space. Check the dimensions to ensure it fits your spool diameter, especially if you use larger 2kg or 3kg rolls.
Heating Power and Speed
Heating power dictates how quickly your filament reaches the target temperature. Units with higher wattage and fans circulate heat faster, reducing drying time. For high-performance materials like Nylon, quick heating ensures consistent results without prolonged waiting. If you print frequently, faster heating translates to better throughput and less downtime between jobs.
Temperature Range Compatibility
Different materials require different drying temperatures to avoid damage. PLA dries well at lower temps, while ABS and Nylon benefit from higher heat. Ensure the dryer's range covers the specific filaments you use most often. A wide adjustable range offers flexibility for experimenting with new materials without buying a new unit.
Sealing and Moisture Protection
Effective sealing keeps moisture out when the dryer is off, protecting your filament during storage. Look for rubber gaskets, secure latches, and sealed outlets. Good sealing prevents humidity from seeping back into the chamber after drying, maintaining the quality of your filament between jobs and ensuring consistent print quality.
User Interface and Controls
User-friendly controls make setting temperature and time effortless. Touchscreens offer precision but can be sensitive, while physical knobs are robust and easy to use. Some models offer presets for common materials, simplifying the process. Choose an interface that matches your comfort level to ensure you use the device consistently.
Safety Features
Safety features protect both your filament and your workspace from overheating. Look for units with automatic cut-offs, temperature switches, and fan monitoring. These safeguards ensure the device shuts down if issues arise, preventing damage to your equipment and reducing fire risk. Safety is especially important for units left running overnight.
Noise Levels
Noise matters if you print in shared or quiet spaces. Some fans and heaters operate loudly, which can be distracting. Check for decibel ratings to ensure the unit operates quietly enough for your environment. A quiet dryer ensures your workflow remains pleasant and uninterrupted by mechanical noise.
Price and Value
Price reflects the features and build quality of the dryer. Higher-end models offer dual chambers and smart controls but cost more. Basic models save money but may lack advanced features. Determine your budget based on how critical drying speed and capacity are to your productivity to find the best balance.
How to Use and Care for Your 3D Printer Filament Dryer Box
After drying, allow the unit to cool before moving the spool to storage. Clean the interior periodically to remove dust or filament shavings that might block airflow. Check the seals for wear over time to ensure continued protection against ambient humidity.
Frequently Asked Questions
Do filament dryers work for all 3D printing materials?
Most dryers work well for PLA, PETG, TPU, and ABS, but you must check the max temperature. High-temp materials like Nylon or Polycarbonate may require units that reach 70°C or higher. Always verify compatibility to ensure safe and effective drying.
How long does filament drying take?
Drying time varies from 4 to 12 hours depending on the material and moisture content. PLA usually needs less time, while Nylon may require 12 hours or more. Using a dryer with higher power can reduce these times significantly.
Can I leave my filament in the dryer overnight?
Yes, many dryers are safe for overnight use with timers and safety cut-offs. Ensure you set the timer correctly or choose a model with auto-shutoff features. Monitoring humidity helps prevent over-drying which can make some filaments brittle.
Is it better to dry before storing or during printing?
Drying before storing ensures the filament remains dry until use, while drying during printing saves time. Many units support both modes, so use active drying before long jobs and passive storage between prints for best results.
What happens if the filament is too damp?
Too much moisture causes bubbling, popping sounds, and weak layers during printing. Excess humidity leads to inconsistent extrusion and poor surface finish. Proper drying eliminates these issues by removing water vapor from the plastic polymer structure.
Are desiccants enough instead of a dryer?
Desiccants absorb moisture passively and are good for storage but cannot remove existing water from wet filament. An active dryer uses heat to evaporate moisture quickly, which is necessary for restoring wet filaments. Use both for best long-term protection.
Final Thoughts on Choosing the Best 3D Printer Filament Dryer Box
Remember that pricing and availability can fluctuate so check current listings before buying. Investing in a good dryer box protects your filament investment and ensures consistent printing results for all your projects.